A 1–9 GHz Linear-Wide-Tuning-Range Quadrature Ring Oscillator in 130 nm CMOS for Non-Contact Vital Sign Radar Application |
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| Authors: | Li C. Lin J. |
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| Affiliation: | Department of Electrical and Computer Engineering, Texas Tech University, Lubbock, TX, USA; |
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| Abstract: | A 1–9 GHz linear-wide-tuning-range quadrature ring oscillator has been designed and fabricated in UMC 0.13 $mu$m CMOS process. The chip was wire-bonded on printed circuit board and tested, showing a liner tuning range from 1 GHz to 9 GHz. Comparative study with other differential ring oscillators demonstrates the advantages of this design in low power consumption and linear-tuning. The oscillator was designed as the voltage controlled oscillator (VCO) for a non-contact vital sign radar sensor. It can also be used for other applications such as ultra-wideband (UWB) impulse radio and clock recovery in broadband optical communications. |
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